Bug Info:
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In RTL orientation the selected item in editable combobox is not aligning to right but it's working fine for non editable combobox.

JDK info:
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java version "1.6.0_02-ea"
Java(TM) SE Runtime Environment (build 1.6.0_02-ea-b02)
Java HotSpot(TM) Client VM (build 1.6.0_02-ea-b02, mixed mode, sharing)

GTK VERSION: 2.0 and above

Steps to Reproduce:
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Download attached java file and run with above mentioned java version.

Please find the java and attached image file reference.